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  • Crank Brothers - Gem Hand Pump - Silver
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Crank Brothers Gem Hand Pump


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    20 Reviews


    It’s a soft ‘G’.

    The Crank Brothers Gem Hand Pump is tiny and lightweight, but it packs a wallop. The Gem will take your tire all the way to 130psi when you need it, and it will take it there in a hurry. The best part about the Gem pump, however, is that, at 128 grams, you won’t even know you have it until you need it.

    • 130psi max
    • 128 grams
    • Item #CRN0186

    Tech Specs

    [short] 176 mm, [long] 205 mm
    Valve Type
    Schrader, Presta
    Max Pressure
    130 PSI
    Claimed Weight
    [short] 128 g, [long] 155 g
    Recommended Use
    fixing flats

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    lil' pump

    • Familiarity: I've used it several times

    this little guy is tiny in size and lightweight but is efficient and gets the job done. I've forgotten my pump before and this little pump was super easy to use and i didnt feel like i have to pump 300 times to get the air i needed. i always have it in my bike bag and i forget its there because its so light!

    Work great!

    • Familiarity: I've used it several times

    I needed a small hand put that would fit in my hip pack and this pump fit the bill. Compact size and seems well made. The high and low pressure setting is a nice feature.

    Handy Hand Pump

    • Familiarity: I've used it several times

    If you're out on the trails without a good pump, you're gonna have a bad time. At least you will if you get a flat! And of course you never know when that could happen. That's why Crank Bros made this amazing Gem Hand Pump. It's compact, looks good, and most importantly easy to use. A bottle cage mount is included for safe keeping. Straight out of the package, it's set up for schrader valve cores. To switch modes, just unscrew the dust cap on the air port, remove the core (I needed pliers), flip it 180 degrees and reinsert. If you run presta valve cores then I recommend switching the mode at home before your first ride.
    I've only had to use it once on the trail, and it was quick and simple as any hand pump can be. Crank Bros continues to impress!

    Best mini pump on the market.

    • Familiarity: I've put it through the wringer

    I've tried all of 'em. Candidly, I really wanted to love one of the pumps that has a hose on it, because that seems soooooo convenient. But after trying the Crank pump, I've found the one that lives in my pocket. It works under all conditions, and I can carry one pump for mountain and road. The switch-function works really well--high volume/lower pressure, or low volume/high pressure. Even with road tires, I put a couple "high volume" pumps into them, and then switch over to finish them off.

    Reliable, even after being submerged, dropped in mud, etc. Wash it off, let it dry, and then throw it back in a pocket or hydration pack. This one rocks.

    Ain't Nothin' but a G-Thang

    • Familiarity: I've put it through the wringer

    I went with the Small Red pump and I keep it in my Dakine Low Rider hip pack... and you can't even tell it's there! The pump has the option to serve Presta and Shrader valves, just be sure to swap if you have Presta (comes setup with the shrader valve head). Very easy to swap out, hit me up if you need help figuring it out.

    Super light and discrete, this pump is an on trail necessity.

    Crank brothers continues to make really quality products and this pump is no exception! CB FTW.

    Strong little guy

      Pretty amazing you can break 100psi with this tiny little pump. I got this for a pump to fit in my small under seat saddle bag and it fits just right and isn't terribly hard to use. The switch for low or high psi is a very effective design.

      I have one on every bike!

      • Familiarity: I've used it several times

      I have three bikes so naturally I had to pick three of these up, one in each color. These pumps were great weather you have a presta or shraeder valve on your tubes. I feel like you get a good amount of air with each pump, more than you do with some of the other small hand pumps that are out there. This easy to use and best of all efficient. I've mounted all mine underneath my water bottle cages.

      Matthew Pizza
      Expert Gearhead

      Simple and functinal

        If you just need something to have in the pack or laying around the house to re-fill those tires before your daily ride, this is the hand pump for you. Never had any issues, fits all types of tires and gets the job done. If there is one downfall it is not knowing how much pressure you are sitting at.

        Great all around pump

        • Familiarity: I've used it several times

        This pump has sure come in handy. This excellent little pump weighs next to nothing and is quite small compared to most other pumps, its very short. It is also very convenient that it has both a shrader and presta valve available.

        Nifty little thing...

        • Familiarity: I've used it several times

        This pump is great. Two extensions while pumping based on < 40 psi or over. The two valve option is simple and effective. It also weighs nothing. Mainly either keep it in my mtn bike pack or in the back pocket of my jersey while road riding. Very effective both ways.

        Ride On

        • Familiarity: I've put it through the wringer

        I consistently get flats on my mountain bike, mostly from riding more than I should, but this little gem has saved me more times than I can count. It comes in two sizes dependent on what you need, the short fits within the smallest compartment of my Camelbak Mule without an issue, and works incredibly well for road and mountain bike tires. Obviously it isn't a floor pump, but with minimal effort you can get your tubes pumped up and ready to go in a heartbeat. With the ability to switch from Shrader to Presta valves and the light weight of 128-155 grams, I can definitely say I am thoroughly satisfied with this pump!

        It works

        • Familiarity: I've used it several times

        I got this as an inexpensive insurance policy for getting aflat while mtn biking. It can be switched from Shrader to Presta valves quickly making it great for my mountain (presta) and commuter (shrader) bikes. It has become my main bike pump since the cheap floor pump I had decided to call it quits.

        A Gem of a Pump

        • Familiarity: I've used it several times

        I have gone back and forth between pumps of various styles and ended up thinking smaller is better. I run tubeless, so I so rarely need to touch my valves, but it is nice in the event of a loss of pressure or if I need to throw a tube in. Short and fat is where it is at!

        Great little pump

        • Familiarity: I've put it through the wringer

        Compact, lightweight and easy to use despite it's small size. Easily stows in my cambelbak without taking up much room. Quality construction, durable, works very well. I only use it for MTB so I can't attest to how it works with high-pressure road tires.

        I like. I like it, I say.

        • Familiarity: I've used it several times

        This is my first Crank Brothers purchase, and I'm impressed by the quality of this product. The pump is lightweight and includes a bracket for attaching the pump beneath your water bottle cage so you never need to leave home without it. The red color doesn't quite match my bike's colorway, but that's a minor quibble.

        The pump attaches to my Presta valves no problem. Due to its small size, pumping is a bit more difficult than with larger hand pumps. I'm not sure if I could actually pump a tire up to 130 PSI with this thing as per spec, but it will get you pumped again to rol home without too much trouble.

        One caveat about pumping with this pump: because the pump head is attached to the pump shaft, I worry a bit about the torque I'm putting on the tube valve as I pump back and forth. I think that perhaps the design Lezyne uses (with a tube attachment between the shaft and the pump head) is a smarter one to prevent so much pressure being put on the valve as you pump the tire.

        Continues the tradition

        • Familiarity: I've used it once or twice and have initial impressions

        I have a high opinion of all the Crankbrothers products I have owned and this pump only furthers that. About ten years ago I owned one of their first mini-pumps and it lasted a long time. Just like that pump the Gem has two-stage action. It can pump either high volume, which is awesome for getting a head start on airing up a tire, or high pressure, which is perfect for topping a tire off.

        This pump permanently resides in my pack and will be what I turn to should the need arise.

        We have a bike that has the Gem Pump in a...

        We have a bike that has the Gem Pump in a pack but we're not sure just how it works. It has a pressure gauge on it and kind of looks like a hammer. Do you have instructions on how to use this item>